Seal assembly and rotary machine containing such seal

Details Seal assembly and rotary machine containing such seal Seal assembly and rotary machine containing such seal

2003-07-22

2009-08-25

Batson, Victor (Department: 3677)

Seal for a joint or juncture

Seal between relatively movable parts

Brush seal

C277S303000

Reexamination Certificate

active

07578509

ABSTRACT:
A seal assembly which, among other applications, may be used for sealing fluid leakage between a steam or combustion (gas) turbine rotor and a turbine stator body. The seal assembly includes elements having a plurality of spaced leaf seal members with slots therebetween. Each leaf seal member is angled out-of-plane between a fixed end and a free end thereof, and the free ends slidably engage the rotatable component. In one embodiment, the fixed ends of each leaf seal member are positioned substantially perpendicular to a longitudinal axis of the rotating component. A support may be provided supporting the free end such that it contacts a distal end of the support in an operative state and is out of contact with the distal end in an inoperative state. Seal members may include two different materials having different coefficients of thermal expansion.

REFERENCES:
patent: 3917150 (1975-11-01), Ferguson et al.
patent: 4022948 (1977-05-01), Smith et al.
patent: 4204629 (1980-05-01), Bridges
patent: 4209268 (1980-06-01), Fujiwara et al.
patent: 4274575 (1981-06-01), Flower
patent: 4645217 (1987-02-01), Honeycutt, Jr. et al.
patent: 4720969 (1988-01-01), Jackman
patent: 4813608 (1989-03-01), Holowach et al.
patent: 4940080 (1990-07-01), Reeves et al.
patent: 5029875 (1991-07-01), Spain et al.
patent: 5042823 (1991-08-01), Mackay et al.
patent: 5066024 (1991-11-01), Reisinger et al.
patent: 5071138 (1991-12-01), Mackay et al.
patent: 5074748 (1991-12-01), Hagle
patent: 5076590 (1991-12-01), Steinetz et al.
patent: 5090710 (1992-02-01), Flower
patent: 5100158 (1992-03-01), Gardner
patent: 5106104 (1992-04-01), Atkinson et al.
patent: 5108116 (1992-04-01), Johnson et al.
patent: 5143292 (1992-09-01), Corsmeier et al.
patent: 5201530 (1993-04-01), Kelch et al.
patent: 5316318 (1994-05-01), Veau
patent: 5401036 (1995-03-01), Basu
patent: 5425543 (1995-06-01), Buckshaw et al.
patent: 5568931 (1996-10-01), Tseng et al.
patent: 5630590 (1997-05-01), Bouchard et al.
patent: 5688105 (1997-11-01), Hoffelner
patent: 5704760 (1998-01-01), Bouchard et al.
patent: 5755445 (1998-05-01), Arora
patent: 5794938 (1998-08-01), Hofner et al.
patent: 5794942 (1998-08-01), Vance et al.
patent: 5799952 (1998-09-01), Morrison et al.
patent: 5884918 (1999-03-01), Basu et al.
patent: 5961125 (1999-10-01), Wolfe et al.
patent: 5961280 (1999-10-01), Turnquist et al.
patent: 5975535 (1999-11-01), Gail et al.
patent: 5987879 (1999-11-01), Ono
patent: 5997004 (1999-12-01), Braun et al.
patent: 6010132 (2000-01-01), Bagepalli et al.
patent: 6012723 (2000-01-01), Beeck
patent: 6027121 (2000-02-01), Cromer et al.
patent: 6030175 (2000-02-01), Bagepalli et al.
patent: 6032959 (2000-03-01), Carter
patent: 6042119 (2000-03-01), Bagepalli et al.
patent: 6045134 (2000-04-01), Turnquist et al.
patent: 6059526 (2000-05-01), Mayr
patent: 6079714 (2000-06-01), Kemsley
patent: 6079945 (2000-06-01), Wolfe et al.
patent: 6105966 (2000-08-01), Turnquist et al.
patent: 6105967 (2000-08-01), Turnquist et al.
patent: 6116608 (2000-09-01), Wolfe et al.
patent: 6120622 (2000-09-01), Mayr et al.
patent: 6131910 (2000-10-01), Bagepalli et al.
patent: 6131911 (2000-10-01), Cromer et al.
patent: 6139018 (2000-10-01), Cromer et al.
patent: 6139019 (2000-10-01), Dinc et al.
patent: 6161836 (2000-12-01), Zhou
patent: 6168162 (2001-01-01), Reluzco et al.
patent: 6170831 (2001-01-01), Bouchard
patent: 6173958 (2001-01-01), Dinc et al.
patent: 6173962 (2001-01-01), Morrison et al.
patent: 6220602 (2001-04-01), Webster et al.
patent: 6267381 (2001-07-01), Wright
patent: 6352263 (2002-03-01), Gail et al.
patent: 6457719 (2002-10-01), Fellenstein et al.
patent: 6739592 (2004-05-01), Kono
patent: 6772482 (2004-08-01), Crudgington
patent: 2001/0030397 (2001-10-01), Beichl
patent: 100 17 643 (2001-10-01), None
Arora, Gul K. et al., “Pressure Balanced, Low Hysteresis, Finger Seal Test Results,” 35th Joint Propulsion Conference and Exhibit, Los Angeles, California, Jun. 20-24, 1999.
Steinetz, Bruce M. et al., “Advanced Seal Technology Role in Meeting Next Generation Turbine Engine Goals,” Propulsion and Power Systems First Meeting on Design Principles and Methods for Aircraft Gas Turbine Engines, Toulouse, France, May 11-15, 1998.
“Performance and Reliability Improvements for Heavy-Duty Gas Turbines,” GE Power Systems GER-3571H, Apr. 2000, pp. 5-6.
Hendricks, Robert C. et al., “Two-way brush seals catch a wave,” 1997 International Gas Turbine & Aeroengine Congress & Exhibition, Orlando, Florida.
“Retractable brush seal optimizes efficiency and availability for cycling and baseloaded steam turbines,” http://www.demagdelaval.com.
“Brush seals,” http://www.crossmanufacturing.com.
“Brush Sealing Technology for Gas Turbines,” http://www.powmat.com.

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